Rear-control water injection gun



FIG. 1 is a front elevational view of a rear-control water injection gun showing my new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a perspective view thereof. 

The ornamental design for a rear-control water injection gun, as shown and described. 